KN95 mask is a mask with filtration efficiency for particles, the filtering efficiency for non-oily particles in the air can reach more than 95%. It is in line with China GB2626 mandatory standards, non-oily particles filtration efficiency ≥ 95%. The efficiency of filtration is relatively high.
During the epidemic to use the KN95 mask to prevent infection of the new coronavirus, the effect is particularly good, due to high filtration efficiency, ventilation will be relatively poor, more suitable for front-line medical personnel to use, the protection effect will be better.